Preheat the oven to 350°F. Line two cookie sheets with parchment paper.
In the bowl of a stand mixer, combine the peanut butter, sugar, baking soda, egg and egg yolk. Mix on low until thouroughly mixed and smooth.
1 cup creamy peanut butter, 1 cup sugar, 1 teaspoon baking soda, 1 egg, 1 egg yolk
Add 2 tablespoons peanuts and ¼ cup chocolate chips. Mix on low until evenly distributed.
½ cup finely chopped dry roasted peanuts, divided, ½ cup mini chocolate chips, divided
Using a small cookie scoop, or tablespoon, place dough balls on a baking sheet. Place in the refrigerator for 10 minutes.
Meanwhile, combine the remaining peanuts and chocolate chips in a small bowl.
½ cup finely chopped dry roasted peanuts, divided, ½ cup mini chocolate chips, divided
Working with one dough ball at a time, firmly press the tops into the peanut and chocolate chip mixture, coating the tops with the mixture. Place dough balls 2 inches apart on baking sheet.
Bake in 350°F oven for 11-13 minutes or until just beginning to brown around the edges. Remove from oven, let cool on baking sheet for 2 minutes before transferring to a cooling rack to cool completely.